package com.pb.baiduapi;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; /**  * 获取经纬度 *  * @author jueyue 返回格式：Map<String,Object> map map.put("status",  * reader.nextString());//状态 map.put("result", list);//查询结果  * list<map<String,String>>  * 密钥:f247cdb592eb43ebac6ccd27f796e2d2  */  public class GetLatAndLngByBaidu {  /**  * @param addr  * 查询的地址  * @return  * @throws IOException  */  public Object[] getCoordinate(String addr) throws IOException {  String lng = null;//经度 String lat = null;//纬度 String address = null;  try {  address = java.net.URLEncoder.encode(addr, "UTF-8");  }catch (UnsupportedEncodingException e1) {  e1.printStackTrace();  }  String key = "f247cdb592eb43ebac6ccd27f796e2d2";  String url = String .format("http://api.map.baidu.com/geocoder?address=%s&output=json&key=%s", address, key);  URL myURL = null;  URLConnection httpsConn = null;  try {  myURL = new URL(url);  } catch (MalformedURLException e) {  e.printStackTrace();  }  InputStreamReader insr = null; BufferedReader br = null; try {  httpsConn = (URLConnection) myURL.openConnection();// 不使用代理  if (httpsConn != null) {  insr = new InputStreamReader( httpsConn.getInputStream(), "UTF-8");  br = new BufferedReader(insr);  String data = null;  int count = 1; while((data= br.readLine())!=null){  if(count==5){ lng = (String)data.subSequence(data.indexOf(":")+1, data.indexOf(","));//经度 count++; }else if(count==6){ lat = data.substring(data.indexOf(":")+1);//纬度 count++; }else{ count++; } }  }  } catch (IOException e) {  e.printStackTrace();  } finally { if(insr!=null){ insr.close(); } if(br!=null){ br.close(); } } return new Object[]{lng,lat};  }  public static void main(String[] args) throws IOException { GetLatAndLngByBaidu getLatAndLngByBaidu = new GetLatAndLngByBaidu(); Object[] o = getLatAndLngByBaidu.getCoordinate("成都市天府四街"); System.out.println(o[0]);//经度 System.out.println(o[1]);//纬度 } }

输出结果：104.04701

30.548397

调用以下路径根据经纬度获取地址，返回数据为JSON格式，

http://api.map.baidu.com/geocoder/v2/?ak=pmCgmADsAsD9rEXkqWNcTzjd&location=30.548397,104.04701&output=json&pois=1

返回结果：

{"status":0,"result":{"location":{"lng":104.04701001273,"lat":30.548396923974},"formatted_address":"四川省成都市武侯区天府四街","business":"","addressComponent":{"city":"成都市","district":"武侯区","province":"四川省","street":"天府四街","street_number":""},"pois":[{"addr":"四川省成都市武侯区天府四街","cp":"NavInfo","distance":"144","name":"保利·心语花园","poiType":"地产小区","point":{"x":104.04823889466,"y":30.54874673449},"tel":"","uid":"881965b85a8d8a977369d348","zip":""},{"addr":"四川省成都市武侯区天府四街","cp":"NavInfo","distance":"629","name":"逸都国际","poiType":"地产小区","point":{"x":104.05247889667,"y":30.547152788724},"tel":"","uid":"e49f869c4f156be9c6effb6b","zip":""},{"addr":"四川省成都市武侯区剑南大道","cp":"NavInfo","distance":"881","name":"世豪广场","poiType":"地产小区","point":{"x":104.05252381195,"y":30.553318490823},"tel":"","uid":"a2a7b0b167a0e1997adbd206","zip":""},{"addr":"四川省成都市武侯区德赛三街","cp":"NavInfo","distance":"989","name":"顾客停车场","poiType":"交通设施","point":{"x":104.04942465794,"y":30.555798655385},"tel":"","uid":"d135a6e15571911483a00cfe","zip":""}],"cityCode":75}}